Elizabeth Smart stormed out of the courtroom Wednesday after a witness testified that her kidnapper Brian David Mitchell had been motivated to abduct her because of his desire to have children and create a new race, the Deseret News reported.

Smart’s parents, Ed and Lois, also left the courtroom during forensic psychiatrist Paul Whitehead’s testimony. Whitehead testified that Elizabeth Smart was chastised by Mitchell and his wife, Wanda Barzee, for not wanting to have children.

He went on to say that she agreed to pick out a name for a baby after being badgered by her kidnappers.

Whitehead was called to testify about Mitchell’s psychiatric condition. His lawyers are not contesting that he kidnapped Smart in 2002. They are attempting to argue that he is mentally ill and therefore cannot be held responsible for his actions.

Whitehead said on the stand that he believes Mitchell suffers from a delusional disorder. He also said that he believed Mitchell and Barzee began committing crimes when they met and started to feed off one another’s mental illness.

Mitchell entered the courtroom Wednesday singing Christmas carols, his eyes closed and hands clasped, one day after collapsing in court from an apparent seizure. Now a daily occurrence, Mitchell was escorted out of the courtroom for disrupting proceedings.

The defense is expected to conclude its case on Thursday.

Mitchell is accused of abducting Smart from her Salt Lake City bedroom, holding her for nine months and raping her repeatedly during her captivity.